Hello I'm sorry you've experienced this problem, I'll take a look into it as soon as possible to see where I can find compatibility. Thank you for reporting this
Viewing post in Ritter Active Item System (RPG Maker MV) comments
I think I've found a fix. I've uploaded the file. Since I don't normally use this yanfly plugin it would help if you could test my plugin against it. What I can say for sure is that my new change stops the crash and my plugin does run while that other plugin is enabled.
Let me know how it goes.
Thank you!